CN213602652U

CN213602652U - POE equipment test fixture

Info

Publication number: CN213602652U
Application number: CN202022737240.3U
Authority: CN
Inventors: 郭敏; 李正; 陈炼; 蒋汉柏
Original assignee: Hunan Fullriver High Technology Co ltd
Current assignee: Hunan Fullriver High Technology Co ltd
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2021-07-02
Anticipated expiration: 2030-11-23

Abstract

The utility model discloses a POE equipment test fixture, put module, MCU and human-computer interaction module including net gape module, network transformer, power control unit, fortune. The network port module comprises a POE port and an Ethernet port; the network transformer is connected with the output end of the POE port, the data output end of the network transformer is connected with the Ethernet port, and the input end of the power control unit is connected with the POE power output end of the network transformer; the output end of the power supply control unit is connected with the input end of the first operational amplifier chip through the voltage division module, and the output end of the second operational amplifier chip is connected with the control end of the power supply control unit; the ADC input end of the MCU is connected with the output end of the first operational amplifier chip, and the DAC output end of the MCU is connected with the input end of the second operational amplifier chip. The device can realize the simultaneous test of a plurality of POE equipment, simplify the test flow of the POE equipment and improve the test efficiency.

Description

POE equipment test fixture

Technical Field

The utility model relates to a communication equipment test field, specificly relate to a POE equipment test fixture.

Background

The Power Over Ethernet (PoE) refers to a technology that can provide dc Power for some IP-based terminals (such as IP phones, wireless lan access points AP, network cameras, etc.) while transmitting data signals for such devices without any modification of the existing Ethernet cat.5 wiring infrastructure.

The POE device needs to pass through a testing link before leaving the factory, however, in the conventional testing mode, each POE device is tested one to one, the flow is complex, and the testing efficiency is low. Today, enterprises are becoming more and more expensive in terms of labor and time, and more people are realizing the importance of work efficiency. The work efficiency is closely related to the quality of the work result. The high-efficiency work undoubtedly brings about the great increase of the yield and the improvement of the product quality, and a tool which can shorten the testing flow and can carry out high-efficiency testing on the POE equipment in batches is lacking at present.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a POE equipment test fixture can simplify PoE equipment test flow, improves efficiency of software testing.

According to the utility model discloses POE equipment test fixture, include:

the network port module comprises a plurality of POE ports and Ethernet ports which correspond to the POE ports one to one; the network transformer is connected with the output end of the POE port and used for separating a PoE power supply from Ethernet data, and the data output end of the network transformer is connected with the Ethernet port and used for sending the separated Ethernet data; the input end of the power supply control unit is connected with the POE power supply output end of the network transformer; the operational amplifier module comprises a first operational amplifier chip and a second operational amplifier chip, the output end of the power supply control unit is connected with the input end of the first operational amplifier chip through a voltage division module, and the output end of the second operational amplifier chip is connected with the control end of the power supply control unit; the ADC input end of the MCU is connected with the output end of the first operational amplifier chip, and the DAC output end of the MCU is connected with the input end of the second operational amplifier chip; and the human-computer interaction module is connected with the MCU and used for inputting parameters and displaying a test result.

According to the utility model discloses POE equipment test fixture has following technological effect at least: the utility model discloses embodiment can connect a plurality of POE equipment simultaneously through a plurality of POE ports on the net gape module, and network transformer is with the PoE power with the ethernet data separation back, on the one hand with ethernet data input to the ethernet port, on the other hand with POE power transmission to power control unit. The power control unit exports the POE power to the load on, and partial POE power partial pressure back is put the chip input to MCU's ADC input through first fortune to the voltage division module. The MCU calculates corresponding output voltage according to the PoE input voltage, PoE total power input by the man-machine interaction module and the port number, and then feeds back the output voltage to a user through the man-machine interaction module; in addition, the MCU inputs the output voltage to the second operational amplifier chip through the DAC output end, and the second operational amplifier chip controls the running state of the power supply control unit.

In this way, the test fixture of this application can realize the concurrent test of a plurality of POE equipment, can simplify the POE equipment test flow, improves efficiency of software testing.

According to the utility model discloses a some embodiments, power control unit includes rectifier module, PD module and load switch, rectifier module's input with network transformer's POE power output end links to each other, rectifier module's output with the input of PD module links to each other, the output of PD module pass through the partial pressure module with the input of chip is put to first fortune links to each other, load switch is connected to the PD module with the break-make in order to be used for control power between the partial pressure module, the output of chip is put to second fortune with load switch's control end links to each other.

According to some embodiments of the present invention, the number of PD modules is the same as the number of POE ports.

According to some embodiments of the invention, the load switch is a MOS transistor.

According to the utility model discloses a some embodiments still include independent power module, independent power module is used for putting module, MCU and human-computer interaction module power supply for fortune.

According to the utility model discloses a some embodiments, independent power module includes AC/DC power module and DC/DC power module, the commercial power is connected to AC/DC power module's input, DC/DC power module's input and fortune are connected respectively to AC/DC power module's output and are put the feeder ear of module, DC/DC power module's output links to each other with MCU and human-computer interaction module's feeder ear.

According to some embodiments of the utility model, the human-computer interaction module includes display screen and the button that links to each other with MCU respectively.

According to some embodiments of the utility model, still be provided with the LED display lamp on the POE port in order to be used for showing POE connection status.

According to some embodiments of the invention, the model of the MCU is STM32F301K 6.

According to some embodiments of the utility model, the model of chip is put to first fortune is OP07, the model of chip is put to second fortune is LM 324.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic block diagram of a POE device test fixture in an embodiment of the present invention;

fig. 2 is a schematic block diagram of an independent power module according to an embodiment of the present invention;

fig. 3 is an interface sectional view of a network port module according to an embodiment of the present invention;

fig. 4 is a key arrangement diagram according to an embodiment of the present invention.

Reference numerals

The network interface module 100, the POE port 110, the LED display lamp 111, the ethernet port 120, the network transformer 200, the power control unit 300, the rectifier module 310, the PD module 320, the load switch 330, the voltage divider module 340, the operational amplifier module 400, the first operational amplifier chip 410, the second operational amplifier chip 420, the MCU500, the human-computer interaction module 600, the display screen 610, the button 620, the AC/DC power module 710, and the DC/DC power module 720.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1, a POE device test fixture includes: the network interface module 100, the network transformer 200, the power control unit 300, the operational amplifier module 400, the MCU500 and the human-computer interaction module 600.

The network port module 100 includes POE ports 110 and ethernet ports 120, and referring to fig. 3, the network port module 100 in this embodiment is provided with eight POE ports 110 and eight ethernet ports 120, each POE port 110 corresponds to one ethernet port 120, and the network port module adopts an RJ45 module. In order to display the connection state more intuitively, the POE port 110 is further provided with an LED display lamp 111, and a user can determine the POE connection state through the state of the lamp.

The network transformer 200 is connected to the output terminal of the POE port 110, the network transformer 200 is used to separate POE power from ethernet data, the data output terminal of the network transformer 200 is connected to the ethernet port 120, and the separated ethernet data is transmitted through the ethernet port 120.

The power control unit 300 includes a rectifier module 310, a PD module 320, and a load switch 330, an input end of the rectifier module 310 is connected to a POE power output end of the network transformer 200, the rectifier module 310 is used to correct a polarity of a POE power, an output end of the rectifier module 310 is connected to an input end of the PD module 320, and the PD module 320 is used to load a POE output to a load after a POE handshake is successful, preferably, the PD module 320 is in a model of MP 8001. The utility model discloses there are eight POE ports 110, consequently have eight loads, need dispose 8 MP 8001.

The operational amplifier module 400 includes a first operational amplifier chip 410 and a second operational amplifier chip 420, an output terminal of the PD module 320 is further connected to an input terminal of the first operational amplifier chip 410 through a voltage dividing module 340, the load switch 330 is connected between the PD module 320 and the voltage dividing module 340 for controlling on/off of a power supply, an output terminal of the second operational amplifier chip 420 is connected to a control terminal of the load switch 330, in this embodiment, the load switch 330 is a MOS transistor, or another switch chip may be used, the type of the MOS transistor is IPP35CN10N of Infineon corporation, when a drain voltage is not changed, the drain current is a function of a gate source voltage, the drain current is controlled by controlling the gate source voltage, and the voltage on a detection resistor is fed back to the second operational amplifier chip 420 to keep the stability of the gate source voltage. The ADC input terminal of the MCU500 is connected to the output terminal of the first operational amplifier chip 410, and the DAC output terminal of the MCU500 is connected to the input terminal of the second operational amplifier chip 420.

Preferably, in this embodiment, the first operational amplifier chip 410 is a single-channel operational amplifier that uses OP07 from Analog Devices, the voltage dividing module 340 divides the input voltage of PoE and inputs the divided voltage to the OP07, the output voltage of OP07 is connected to the input terminal of the ADC of the MCU500, and the MCU500 determines the input voltage value of PoE after calculation. The second operational amplifier chip 420 is a 4-channel operational amplifier using an LM324 of TI, which has 8 loads in this embodiment, and therefore uses 2 LM 324. The MCU500 calculates the corresponding output voltage according to the PoE input voltage, the PoE total power and the port number, inputs the output voltage to the LM324 through the DAC output terminal, amplifies the output voltage to the target gate-source voltage of the MOS transistor through the LM324, and controls the drain current of the MOS transistor.

The human-machine interaction module 600 includes a display screen 610 and a button 620 respectively connected to the MCU500, and referring to fig. 4, the user inputs the PoE total power and the port number through the button 620 and inputs the OK key bundle. Pressing UP and DOWN keys selects PoE total power and port number, pressing START STARTs to open load switch 330, and pressing STOP key closes load switch 330. The display screen 610 displays the PoE total power (keypad input), the number of ports (key 620 input) and the average port power (the result of MCU500 calculating PoE total power divided by the number of ports).

Referring to fig. 2, the portable electronic device further comprises an independent power supply module, the independent power supply module comprises an AC/DC power supply module 710 and a DC/DC power supply module 720, the AC/DC power supply module 710 is used for converting 220V commercial power into 12V direct current, the DC/DC power supply module 720 is used for converting 12V direct current into 3.3V low-voltage direct current, an input end of the AC/DC power supply module 710 is connected with the commercial power, an output end of the AC/DC power supply module 710 is respectively connected with an input end of the DC/DC power supply module 720 and a power supply end of the operational amplifier module 400, and an output end of the DC/DC power supply module 720 is connected with power supply ends of the MCU500 and the display.

In order to realize good heat dissipation, the module also comprises a heat dissipation fan which is used for dissipating heat of other modules.

To sum up, the embodiment of the utility model provides a for eight port PoE equipment test fixture, there are eight POE ports 110 and eight ethernet port 120, POE port 110 and ethernet port 120 one-to-one. The POE port 110 is provided with an LED display lamp 111, and the LED display lamp 111 is turned on after the POE handshaking is successful, otherwise, the LED display lamp is not turned on. When testing the PoE device, first power up, input the PoE total power and port number through the button 620, and input the OK key bundle. Pressing the SART key, the DAC output of the MCU500 outputs the calculated voltage, and turns on the load switch 330 to provide a stable load for PoE. Pressing the STOP key turns off the load switch 330 and the load is disconnected.

Taking a 16-port PoE switch as an example, the total PoE output power is 240W, two eight-port PoE device test fixtures are used, the total PoE power of each test fixture is 120W, then a PoE total power entry is selected on the key 620 through UP and DOWN keys, and after pressing an OK key, a user inputs "120" and then presses an OK key bundle for input. Then, the UP and DOWN keys are used to select the port number entry, after the OK key is pressed, the "8" is input, then the OK key is pressed for input, and finally the START key is pressed to open the load switch 330, so as to provide a stable load. Pressing the STOP key after the test ends disconnects the load. At this time, the display screen displays the total power of POE: 120W; number of ports: 8, the number of the cells is 8; average port power: 15W.

To sum up, the embodiment of the utility model provides a test when can realize a plurality of POE equipment can simplify PoE equipment test flow, improves efficiency of software testing.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. A POE equipment test fixture which characterized in that includes:

the network port module (100), wherein the network port module (100) comprises a plurality of POE ports (110) and Ethernet ports (120) corresponding to the POE ports (110) one by one;

a network transformer (200), the network transformer (200) being connected to an output of the POE port (110) for separating POE power from ethernet data, a data output of the network transformer (200) being connected to the ethernet port (120) for transmitting the separated ethernet data;

the power supply control unit (300), wherein the input end of the power supply control unit (300) is connected with the POE power supply output end of the network transformer (200);

the operational amplifier module (400) comprises a first operational amplifier chip (410) and a second operational amplifier chip (420), the output end of the power control unit (300) is connected with the input end of the first operational amplifier chip (410) through a voltage division module (340), and the output end of the second operational amplifier chip (420) is connected with the control end of the power control unit (300);

an ADC input end of the MCU (500) is connected with an output end of the first operational amplifier chip (410), and a DAC output end of the MCU (500) is connected with an input end of the second operational amplifier chip (420);

the human-computer interaction module (600) is connected with the MCU (500) and used for inputting parameters and displaying test results.

2. The POE equipment test fixture of claim 1, wherein: the power control unit (300) comprises a rectifying module (310), a PD module (320) and a load switch (330), wherein the input end of the rectifying module (310) is connected with the POE power output end of the network transformer (200), the output end of the rectifying module (310) is connected with the input end of the PD module (320), the output end of the PD module (320) is connected with the input end of the first operational amplifier chip (410) through a voltage division module (340), the load switch (330) is connected to the PD module (320) and the voltage division module (340) to control the on-off of a power supply, and the output end of the second operational amplifier chip (420) is connected with the control end of the load switch (330).

3. The POE equipment test fixture of claim 2, wherein: the number of PD modules (320) is the same as the number of POE ports (110).

4. The POE equipment test fixture of claim 2, wherein: the load switch (330) is an MOS tube.

5. The POE equipment test fixture of claim 1, wherein: the intelligent power supply also comprises an independent power supply module, wherein the independent power supply module is used for supplying power to the operational amplifier module (400), the MCU (500) and the human-computer interaction module (600).

6. The POE equipment test fixture of claim 5, wherein: the independent power supply module comprises an AC/DC power supply module (710) and a DC/DC power supply module (720), the input end of the AC/DC power supply module (710) is connected with a mains supply, the output end of the AC/DC power supply module (710) is respectively connected with the input end of the DC/DC power supply module (720) and the power supply end of the operational amplifier module (400), and the output end of the DC/DC power supply module (720) is connected with the power supply ends of the MCU (500) and the human-computer interaction module (600).

7. The POE equipment test fixture of claim 1, wherein: the man-machine interaction module (600) comprises a display screen (610) and keys (620) which are respectively connected with the MCU (500).

8. The POE equipment test fixture of claim 1, wherein: and the POE port (110) is also provided with an LED display lamp (111) for displaying the POE connection state.

9. The POE equipment test fixture of claim 1, wherein: the model of the MCU (500) is STM32F301K 6.

10. The POE equipment test fixture of claim 1, wherein: the model of the first operational amplifier chip (410) is OP07, and the model of the second operational amplifier chip (420) is LM 324.